For preventive maintenance to be effective, each piece of equipment to be maintained must have...

Comprehensive Detailed Explanation:

To implement effective preventive maintenance, you must have access to the manufacturer's specifications for each component. These specifications provide details such as recommended maintenance intervals, acceptable tolerances, environmental operating conditions, and part replacement guidelines.

A (MTBF), B (Performance reports), and C (Failure rates) are useful for analysis, but the foundational document for preventive action is the manufacturer’s specification.